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Finding the Fourth Proportional to 528,061.90, 791,509.65 and 291,574.30

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Solution

The fourth proportional to 528,061.90, 791,509.65 and 291,574.30 is: 437,039.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,061.90 : 791,509.65 = 291,574.30 : x
  2. Step 2: Convert to fraction form
    528,061.90/791,509.65 = 291,574.30/x
  3. Step 3: Cross multiply
    528,061.90x = 791,509.65 × 291,574.30
  4. Step 4: Simplify right side
    528,061.90x = 230,783,872,142.00
  5. Step 5: Solve for x
    x = 230,783,872,142.00/528,061.90
  6. Step 6: Final answer
    x = 437,039.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.